From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5032DC4708A for ; Mon, 24 May 2021 15:10:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 060FD61404 for ; Mon, 24 May 2021 15:10:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235296AbhEXPKN (ORCPT ); Mon, 24 May 2021 11:10:13 -0400 Received: from mail.kernel.org ([198.145.29.99]:37250 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233817AbhEXPBi (ORCPT ); Mon, 24 May 2021 11:01:38 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 04BD961482; Mon, 24 May 2021 14:50:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1621867811; bh=mJeqKre+1wmJpQ/4NRYPtBLkivBvz8xppH54EUsGy8s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Xx6ca8OdtGsb7pMI3ESTbeoEEH2vY7zkB/e1Yjj0QkDGgxCP+nbdD57O2WRy20VZr r1Yf5rqnm/4YNlQ5fY8KJpAUZ2sEb2UG8Z8M/BfqnK/0Gdo2lMfxn+xKBO9eiHb+Z4 SNMyoG82pMeTkb3byXkJS9n7mE0VrwSkWlfOQA+TchfJswVRUHz/u4i2jsHrw6TNZW 7b7ceaEE5XqqAuD6gPjmkGrzjAUX3e7mxgUQcCQXZCIT06wMDFpL09qKwd6TSA4xor fVhsHrQTcG1SR8bB52QXN+KuHtj9Aqv/GbHdob8iuXF0/h4yLMYVkuskD2N7X/ekrW X1RXJUjekoKyQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Atul Gopinathan , Jiri Slaby , Greg Kroah-Hartman , Sasha Levin , linux-serial@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 02/25] serial: max310x: unregister uart driver in case of failure and abort Date: Mon, 24 May 2021 10:49:45 -0400 Message-Id: <20210524145008.2499049-2-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210524145008.2499049-1-sashal@kernel.org> References: <20210524145008.2499049-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Atul Gopinathan [ Upstream commit 3890e3dea315f1a257d1b940a2a4e2fa16a7b095 ] The macro "spi_register_driver" invokes the function "__spi_register_driver()" which has a return type of int and can fail, returning a negative value in such a case. This is currently ignored and the init() function yields success even if the spi driver failed to register. Fix this by collecting the return value of "__spi_register_driver()" and also unregister the uart driver in case of failure. Cc: Jiri Slaby Signed-off-by: Atul Gopinathan Link: https://lore.kernel.org/r/20210503115736.2104747-12-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/tty/serial/max310x.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c index 0c35c3c5e373..c1ab0dbda8a9 100644 --- a/drivers/tty/serial/max310x.c +++ b/drivers/tty/serial/max310x.c @@ -1480,10 +1480,12 @@ static int __init max310x_uart_init(void) return ret; #ifdef CONFIG_SPI_MASTER - spi_register_driver(&max310x_spi_driver); + ret = spi_register_driver(&max310x_spi_driver); + if (ret) + uart_unregister_driver(&max310x_uart); #endif - return 0; + return ret; } module_init(max310x_uart_init); -- 2.30.2